Standing at the edge of the waterfall and I give a step forward! All my body muscles tense up as if to hold me up in the air. The cold water is the least of my concerns right now as down the 33 meters waterfall there are only rocks.  Adrenaline warms up my arteries like water boiling in a kettle. The rope tightens up around my waist and stops me from falling any further. With my legs straight, I stand at a 90º angle facing up. I was told how to control the rope with my right hand, but I am scared I might loosen it too quick and fall.…